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Vifa XT18WO09-08, 6.5" Woofer
No longer available
This series builds on the foundation of the PL series, but with new approaches to further enhance the performance. With a high density, low resonance, airflow-optimized chassis it allows maximum airflow under the spider. The result is much lower compression of air in the magnet system, which has also been optimized to reduce distortion. A Wood-fibre cone and phase integrated dust cap is a new technology that strives for the optimum sound quality. Vifa has always been known for searching for the best sound and will only adapt the best materials to achieve this. Low Resonance Multi-roll Surround (LRMS) is another design element used in this series to reduce resonance.
Driver Highlights: Wood-fibre cone and dustcap, Multi-roll
surround, low distortion magnet system, airflow optimized chassis
Electrical Data
Nominal impedance Zn 8 ohm
Maximum impedance Zo 85 ohm
DC resistance Re 5.8 ohm
Voice coil inductance Le 0.54 mH
T-S Parameters
Resonance Frequency fs 38 Hz
Mechanical Q factor Qms 5.87
Electrical Q factor Qes 0.39
Total Q factor Qts 0.37
Force factor Bl 6.2 Tm
Mechanical resistance Rms 0.49 Kg/s
Moving mass Mms 11.1 g
Effective piston area Sd 129 cm2
Equivalent volume Vas 38 ltrs
Sensitivity (2.83V/1m) 88 dB
Voice coil diameter 25 mm
Voice coil height 14 mm
Height of the gap 5 mm
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